Concept:Valency is the combining capacity of an atom, determined by the number of electrons it must gain, lose, or share to achieve a stable electronic configuration.
Explanation:Carbon has atomic number
6.
Its electronic configuration is
2,4, meaning it has
4 electrons in its outermost shell.
To complete its octet, carbon needs
4 more electrons.
So carbon shares its
4 valence electrons with other atoms and forms
4 covalent bonds.
For example, in methane,
CH4​, carbon forms four single bonds with hydrogen atoms.
Therefore, the valency of carbon is
4.
Answer:The correct answer is Option A: Four.